// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2015-2017 Netronome Systems, Inc. */
/* Authors: David Brunecz <[email protected]>
* Jakub Kicinski <[email protected]>
* Jason Mcmullan <[email protected]>
*/
#include <linux/bitfield.h>
#include <linux/ethtool.h>
#include <linux/if_ether.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include "nfp.h"
#include "nfp_nsp.h"
#include "nfp6000/nfp6000.h"
#define NSP_ETH_NBI_PORT_COUNT 24
#define NSP_ETH_MAX_COUNT (2 * NSP_ETH_NBI_PORT_COUNT)
#define NSP_ETH_TABLE_SIZE (NSP_ETH_MAX_COUNT * \
sizeof(union eth_table_entry))
#define NSP_ETH_PORT_LANES GENMASK_ULL(3, 0)
#define NSP_ETH_PORT_INDEX GENMASK_ULL(15, 8)
#define NSP_ETH_PORT_LABEL GENMASK_ULL(53, 48)
#define NSP_ETH_PORT_PHYLABEL GENMASK_ULL(59, 54)
#define NSP_ETH_PORT_FEC_SUPP_BASER BIT_ULL(60)
#define NSP_ETH_PORT_FEC_SUPP_RS BIT_ULL(61)
#define NSP_ETH_PORT_SUPP_ANEG BIT_ULL(63)
#define NSP_ETH_PORT_LANES_MASK cpu_to_le64(NSP_ETH_PORT_LANES)
#define NSP_ETH_STATE_CONFIGURED BIT_ULL(0)
#define NSP_ETH_STATE_ENABLED BIT_ULL(1)
#define NSP_ETH_STATE_TX_ENABLED BIT_ULL(2)
#define NSP_ETH_STATE_RX_ENABLED BIT_ULL(3)
#define NSP_ETH_STATE_RATE GENMASK_ULL(11, 8)
#define NSP_ETH_STATE_INTERFACE GENMASK_ULL(19, 12)
#define NSP_ETH_STATE_MEDIA GENMASK_ULL(21, 20)
#define NSP_ETH_STATE_OVRD_CHNG BIT_ULL(22)
#define NSP_ETH_STATE_ANEG GENMASK_ULL(25, 23)
#define NSP_ETH_STATE_FEC GENMASK_ULL(27, 26)
#define NSP_ETH_STATE_ACT_FEC GENMASK_ULL(29, 28)
#define NSP_ETH_STATE_TX_PAUSE BIT_ULL(31)
#define NSP_ETH_STATE_RX_PAUSE BIT_ULL(32)
#define NSP_ETH_CTRL_CONFIGURED BIT_ULL(0)
#define NSP_ETH_CTRL_ENABLED BIT_ULL(1)
#define NSP_ETH_CTRL_TX_ENABLED BIT_ULL(2)
#define NSP_ETH_CTRL_RX_ENABLED BIT_ULL(3)
#define NSP_ETH_CTRL_SET_RATE BIT_ULL(4)
#define NSP_ETH_CTRL_SET_LANES BIT_ULL(5)
#define NSP_ETH_CTRL_SET_ANEG BIT_ULL(6)
#define NSP_ETH_CTRL_SET_FEC BIT_ULL(7)
#define NSP_ETH_CTRL_SET_IDMODE BIT_ULL(8)
#define NSP_ETH_CTRL_SET_TX_PAUSE BIT_ULL(10)
#define NSP_ETH_CTRL_SET_RX_PAUSE BIT_ULL(11)
enum nfp_eth_raw {
NSP_ETH_RAW_PORT = 0,
NSP_ETH_RAW_STATE,
NSP_ETH_RAW_MAC,
NSP_ETH_RAW_CONTROL,
NSP_ETH_NUM_RAW
};
enum nfp_eth_rate {
RATE_INVALID = 0,
RATE_10M,
RATE_100M,
RATE_1G,
RATE_10G,
RATE_25G,
};
union eth_table_entry {
struct {
__le64 port;
__le64 state;
u8 mac_addr[6];
u8 resv[2];
__le64 control;
};
__le64 raw[NSP_ETH_NUM_RAW];
};
static const struct {
enum nfp_eth_rate rate;
unsigned int speed;
} nsp_eth_rate_tbl[] = {
{ RATE_INVALID, 0, },
{ RATE_10M, SPEED_10, },
{ RATE_100M, SPEED_100, },
{ RATE_1G, SPEED_1000, },
{ RATE_10G, SPEED_10000, },
{ RATE_25G, SPEED_25000, },
};
static unsigned int nfp_eth_rate2speed(enum nfp_eth_rate rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(nsp_eth_rate_tbl); i++)
if (nsp_eth_rate_tbl[i].rate == rate)
return nsp_eth_rate_tbl[i].speed;
return 0;
}
static unsigned int nfp_eth_speed2rate(unsigned int speed)
{
int i;
for (i = 0; i < ARRAY_SIZE(nsp_eth_rate_tbl); i++)
if (nsp_eth_rate_tbl[i].speed == speed)
return nsp_eth_rate_tbl[i].rate;
return RATE_INVALID;
}
static void nfp_eth_copy_mac_reverse(u8 *dst, const u8 *src)
{
int i;
for (i = 0; i < ETH_ALEN; i++)
dst[ETH_ALEN - i - 1] = src[i];
}
static void
nfp_eth_port_translate(struct nfp_nsp *nsp, const union eth_table_entry *src,
unsigned int index, struct nfp_eth_table_port *dst)
{
unsigned int rate;
unsigned int fec;
u64 port, state;
port = le64_to_cpu(src->port);
state = le64_to_cpu(src->state);
dst->eth_index = FIELD_GET(NSP_ETH_PORT_INDEX, port);
dst->index = index;
dst->nbi = index / NSP_ETH_NBI_PORT_COUNT;
dst->base = index % NSP_ETH_NBI_PORT_COUNT;
dst->lanes = FIELD_GET(NSP_ETH_PORT_LANES, port);
dst->enabled = FIELD_GET(NSP_ETH_STATE_ENABLED, state);
dst->tx_enabled = FIELD_GET(NSP_ETH_STATE_TX_ENABLED, state);
dst->rx_enabled = FIELD_GET(NSP_ETH_STATE_RX_ENABLED, state);
rate = nfp_eth_rate2speed(FIELD_GET(NSP_ETH_STATE_RATE, state));
dst->speed = dst->lanes * rate;
dst->interface = FIELD_GET(NSP_ETH_STATE_INTERFACE, state);
dst->media = FIELD_GET(NSP_ETH_STATE_MEDIA, state);
nfp_eth_copy_mac_reverse(dst->mac_addr, src->mac_addr);
dst->label_port = FIELD_GET(NSP_ETH_PORT_PHYLABEL, port);
dst->label_subport = FIELD_GET(NSP_ETH_PORT_LABEL, port);
if (nfp_nsp_get_abi_ver_minor(nsp) < 17)
return;
dst->override_changed = FIELD_GET(NSP_ETH_STATE_OVRD_CHNG, state);
dst->aneg = FIELD_GET(NSP_ETH_STATE_ANEG, state);
if (nfp_nsp_get_abi_ver_minor(nsp) < 22)
return;
fec = FIELD_GET(NSP_ETH_PORT_FEC_SUPP_BASER, port);
dst->fec_modes_supported |= fec << NFP_FEC_BASER_BIT;
fec = FIELD_GET(NSP_ETH_PORT_FEC_SUPP_RS, port);
dst->fec_modes_supported |= fec << NFP_FEC_REED_SOLOMON_BIT;
if (dst->fec_modes_supported)
dst->fec_modes_supported |= NFP_FEC_AUTO | NFP_FEC_DISABLED;
dst->fec = FIELD_GET(NSP_ETH_STATE_FEC, state);
dst->act_fec = dst->fec;
if (nfp_nsp_get_abi_ver_minor(nsp) < 33)
return;
dst->act_fec = FIELD_GET(NSP_ETH_STATE_ACT_FEC, state);
dst->supp_aneg = FIELD_GET(NSP_ETH_PORT_SUPP_ANEG, port);
if (nfp_nsp_get_abi_ver_minor(nsp) < 37) {
dst->tx_pause = true;
dst->rx_pause = true;
return;
}
dst->tx_pause = FIELD_GET(NSP_ETH_STATE_TX_PAUSE, state);
dst->rx_pause = FIELD_GET(NSP_ETH_STATE_RX_PAUSE, state);
}
static void
nfp_eth_calc_port_geometry(struct nfp_cpp *cpp, struct nfp_eth_table *table)
{
unsigned int i, j;
for (i = 0; i < table->count; i++) {
table->max_index = max(table->max_index, table->ports[i].index);
for (j = 0; j < table->count; j++) {
if (table->ports[i].label_port !=
table->ports[j].label_port)
continue;
table->ports[i].port_lanes += table->ports[j].lanes;
if (i == j)
continue;
if (table->ports[i].label_subport ==
table->ports[j].label_subport)
nfp_warn(cpp,
"Port %d subport %d is a duplicate\n",
table->ports[i].label_port,
table->ports[i].label_subport);
table->ports[i].is_split = true;
}
}
}
static void
nfp_eth_calc_port_type(struct nfp_cpp *cpp, struct nfp_eth_table_port *entry)
{
if (entry->interface == NFP_INTERFACE_NONE) {
entry->port_type = PORT_NONE;
return;
} else if (entry->interface == NFP_INTERFACE_RJ45) {
entry->port_type = PORT_TP;
return;
}
if (entry->media == NFP_MEDIA_FIBRE)
entry->port_type = PORT_FIBRE;
else
entry->port_type = PORT_DA;
}
static void
nfp_eth_read_media(struct nfp_cpp *cpp, struct nfp_nsp *nsp, struct nfp_eth_table_port *entry)
{
struct nfp_eth_media_buf ethm = {
.eth_index = entry->eth_index,
};
unsigned int i;
int ret;
if (!nfp_nsp_has_read_media(nsp))
return;
ret = nfp_nsp_read_media(nsp, ðm, sizeof(ethm));
if (ret) {
nfp_err(cpp, "Reading media link modes failed: %d\n", ret);
return;
}
for (i = 0; i < 2; i++) {
entry->link_modes_supp[i] = le64_to_cpu(ethm.supported_modes[i]);
entry->link_modes_ad[i] = le64_to_cpu(ethm.advertised_modes[i]);
}
}
/**
* nfp_eth_read_ports() - retrieve port information
* @cpp: NFP CPP handle
*
* Read the port information from the device. Returned structure should
* be freed with kfree() once no longer needed.
*
* Return: populated ETH table or NULL on error.
*/
struct nfp_eth_table *nfp_eth_read_ports(struct nfp_cpp *cpp)
{
struct nfp_eth_table *ret;
struct nfp_nsp *nsp;
nsp = nfp_nsp_open(cpp);
if (IS_ERR(nsp))
return NULL;
ret = __nfp_eth_read_ports(cpp, nsp);
nfp_nsp_close(nsp);
return ret;
}
struct nfp_eth_table *
__nfp_eth_read_ports(struct nfp_cpp *cpp, struct nfp_nsp *nsp)
{
union eth_table_entry *entries;
struct nfp_eth_table *table;
int i, j, ret, cnt = 0;
entries = kzalloc(NSP_ETH_TABLE_SIZE, GFP_KERNEL);
if (!entries)
return NULL;
ret = nfp_nsp_read_eth_table(nsp, entries, NSP_ETH_TABLE_SIZE);
if (ret < 0) {
nfp_err(cpp, "reading port table failed %d\n", ret);
goto err;
}
for (i = 0; i < NSP_ETH_MAX_COUNT; i++)
if (entries[i].port & NSP_ETH_PORT_LANES_MASK)
cnt++;
/* Some versions of flash will give us 0 instead of port count.
* For those that give a port count, verify it against the value
* calculated above.
*/
if (ret && ret != cnt) {
nfp_err(cpp, "table entry count reported (%d) does not match entries present (%d)\n",
ret, cnt);
goto err;
}
table = kzalloc(struct_size(table, ports, cnt), GFP_KERNEL);
if (!table)
goto err;
table->count = cnt;
for (i = 0, j = 0; i < NSP_ETH_MAX_COUNT; i++)
if (entries[i].port & NSP_ETH_PORT_LANES_MASK)
nfp_eth_port_translate(nsp, &entries[i], i,
&table->ports[j++]);
nfp_eth_calc_port_geometry(cpp, table);
for (i = 0; i < table->count; i++) {
nfp_eth_calc_port_type(cpp, &table->ports[i]);
nfp_eth_read_media(cpp, nsp, &table->ports[i]);
}
kfree(entries);
return table;
err:
kfree(entries);
return NULL;
}
struct nfp_nsp *nfp_eth_config_start(struct nfp_cpp *cpp, unsigned int idx)
{
union eth_table_entry *entries;
struct nfp_nsp *nsp;
int ret;
entries = kzalloc(NSP_ETH_TABLE_SIZE, GFP_KERNEL);
if (!entries)
return ERR_PTR(-ENOMEM);
nsp = nfp_nsp_open(cpp);
if (IS_ERR(nsp)) {
kfree(entries);
return nsp;
}
ret = nfp_nsp_read_eth_table(nsp, entries, NSP_ETH_TABLE_SIZE);
if (ret < 0) {
nfp_err(cpp, "reading port table failed %d\n", ret);
goto err;
}
if (!(entries[idx].port & NSP_ETH_PORT_LANES_MASK)) {
nfp_warn(cpp, "trying to set port state on disabled port %d\n",
idx);
goto err;
}
nfp_nsp_config_set_state(nsp, entries, idx);
return nsp;
err:
nfp_nsp_close(nsp);
kfree(entries);
return ERR_PTR(-EIO);
}
void nfp_eth_config_cleanup_end(struct nfp_nsp *nsp)
{
union eth_table_entry *entries = nfp_nsp_config_entries(nsp);
nfp_nsp_config_set_modified(nsp, false);
nfp_nsp_config_clear_state(nsp);
nfp_nsp_close(nsp);
kfree(entries);
}
/**
* nfp_eth_config_commit_end() - perform recorded configuration changes
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
*
* Perform the configuration which was requested with __nfp_eth_set_*()
* helpers and recorded in @nsp state. If device was already configured
* as requested or no __nfp_eth_set_*() operations were made no NSP command
* will be performed.
*
* Return:
* 0 - configuration successful;
* 1 - no changes were needed;
* -ERRNO - configuration failed.
*/
int nfp_eth_config_commit_end(struct nfp_nsp *nsp)
{
union eth_table_entry *entries = nfp_nsp_config_entries(nsp);
int ret = 1;
if (nfp_nsp_config_modified(nsp)) {
ret = nfp_nsp_write_eth_table(nsp, entries, NSP_ETH_TABLE_SIZE);
ret = ret < 0 ? ret : 0;
}
nfp_eth_config_cleanup_end(nsp);
return ret;
}
/**
* nfp_eth_set_mod_enable() - set PHY module enable control bit
* @cpp: NFP CPP handle
* @idx: NFP chip-wide port index
* @enable: Desired state
*
* Enable or disable PHY module (this usually means setting the TX lanes
* disable bits).
*
* Return:
* 0 - configuration successful;
* 1 - no changes were needed;
* -ERRNO - configuration failed.
*/
int nfp_eth_set_mod_enable(struct nfp_cpp *cpp, unsigned int idx, bool enable)
{
union eth_table_entry *entries;
struct nfp_nsp *nsp;
u64 reg;
nsp = nfp_eth_config_start(cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
entries = nfp_nsp_config_entries(nsp);
/* Check if we are already in requested state */
reg = le64_to_cpu(entries[idx].state);
if (enable != FIELD_GET(NSP_ETH_CTRL_ENABLED, reg)) {
reg = le64_to_cpu(entries[idx].control);
reg &= ~NSP_ETH_CTRL_ENABLED;
reg |= FIELD_PREP(NSP_ETH_CTRL_ENABLED, enable);
entries[idx].control = cpu_to_le64(reg);
nfp_nsp_config_set_modified(nsp, true);
}
return nfp_eth_config_commit_end(nsp);
}
/**
* nfp_eth_set_configured() - set PHY module configured control bit
* @cpp: NFP CPP handle
* @idx: NFP chip-wide port index
* @configed: Desired state
*
* Set the ifup/ifdown state on the PHY.
*
* Return:
* 0 - configuration successful;
* 1 - no changes were needed;
* -ERRNO - configuration failed.
*/
int nfp_eth_set_configured(struct nfp_cpp *cpp, unsigned int idx, bool configed)
{
union eth_table_entry *entries;
struct nfp_nsp *nsp;
u64 reg;
nsp = nfp_eth_config_start(cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
/* Older ABI versions did support this feature, however this has only
* been reliable since ABI 20.
*/
if (nfp_nsp_get_abi_ver_minor(nsp) < 20) {
nfp_eth_config_cleanup_end(nsp);
return -EOPNOTSUPP;
}
entries = nfp_nsp_config_entries(nsp);
/* Check if we are already in requested state */
reg = le64_to_cpu(entries[idx].state);
if (configed != FIELD_GET(NSP_ETH_STATE_CONFIGURED, reg)) {
reg = le64_to_cpu(entries[idx].control);
reg &= ~NSP_ETH_CTRL_CONFIGURED;
reg |= FIELD_PREP(NSP_ETH_CTRL_CONFIGURED, configed);
entries[idx].control = cpu_to_le64(reg);
nfp_nsp_config_set_modified(nsp, true);
}
return nfp_eth_config_commit_end(nsp);
}
static int
nfp_eth_set_bit_config(struct nfp_nsp *nsp, unsigned int raw_idx,
const u64 mask, const unsigned int shift,
u64 val, const u64 ctrl_bit)
{
union eth_table_entry *entries = nfp_nsp_config_entries(nsp);
unsigned int idx = nfp_nsp_config_idx(nsp);
u64 reg;
/* Note: set features were added in ABI 0.14 but the error
* codes were initially not populated correctly.
*/
if (nfp_nsp_get_abi_ver_minor(nsp) < 17) {
nfp_err(nfp_nsp_cpp(nsp),
"set operations not supported, please update flash\n");
return -EOPNOTSUPP;
}
/* Check if we are already in requested state */
reg = le64_to_cpu(entries[idx].raw[raw_idx]);
if (val == (reg & mask) >> shift)
return 0;
reg &= ~mask;
reg |= (val << shift) & mask;
entries[idx].raw[raw_idx] = cpu_to_le64(reg);
entries[idx].control |= cpu_to_le64(ctrl_bit);
nfp_nsp_config_set_modified(nsp, true);
return 0;
}
int nfp_eth_set_idmode(struct nfp_cpp *cpp, unsigned int idx, bool state)
{
union eth_table_entry *entries;
struct nfp_nsp *nsp;
u64 reg;
nsp = nfp_eth_config_start(cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
/* Set this features were added in ABI 0.32 */
if (nfp_nsp_get_abi_ver_minor(nsp) < 32) {
nfp_err(nfp_nsp_cpp(nsp),
"set id mode operation not supported, please update flash\n");
nfp_eth_config_cleanup_end(nsp);
return -EOPNOTSUPP;
}
entries = nfp_nsp_config_entries(nsp);
reg = le64_to_cpu(entries[idx].control);
reg &= ~NSP_ETH_CTRL_SET_IDMODE;
reg |= FIELD_PREP(NSP_ETH_CTRL_SET_IDMODE, state);
entries[idx].control = cpu_to_le64(reg);
nfp_nsp_config_set_modified(nsp, true);
return nfp_eth_config_commit_end(nsp);
}
#define NFP_ETH_SET_BIT_CONFIG(nsp, raw_idx, mask, val, ctrl_bit) \
({ \
__BF_FIELD_CHECK(mask, 0ULL, val, "NFP_ETH_SET_BIT_CONFIG: "); \
nfp_eth_set_bit_config(nsp, raw_idx, mask, __bf_shf(mask), \
val, ctrl_bit); \
})
/**
* __nfp_eth_set_aneg() - set PHY autonegotiation control bit
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @mode: Desired autonegotiation mode
*
* Allow/disallow PHY module to advertise/perform autonegotiation.
* Will write to hwinfo overrides in the flash (persistent config).
*
* Return: 0 or -ERRNO.
*/
int __nfp_eth_set_aneg(struct nfp_nsp *nsp, enum nfp_eth_aneg mode)
{
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_STATE,
NSP_ETH_STATE_ANEG, mode,
NSP_ETH_CTRL_SET_ANEG);
}
/**
* __nfp_eth_set_fec() - set PHY forward error correction control bit
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @mode: Desired fec mode
*
* Set the PHY module forward error correction mode.
* Will write to hwinfo overrides in the flash (persistent config).
*
* Return: 0 or -ERRNO.
*/
static int __nfp_eth_set_fec(struct nfp_nsp *nsp, enum nfp_eth_fec mode)
{
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_STATE,
NSP_ETH_STATE_FEC, mode,
NSP_ETH_CTRL_SET_FEC);
}
/**
* nfp_eth_set_fec() - set PHY forward error correction control mode
* @cpp: NFP CPP handle
* @idx: NFP chip-wide port index
* @mode: Desired fec mode
*
* Return:
* 0 - configuration successful;
* 1 - no changes were needed;
* -ERRNO - configuration failed.
*/
int
nfp_eth_set_fec(struct nfp_cpp *cpp, unsigned int idx, enum nfp_eth_fec mode)
{
struct nfp_nsp *nsp;
int err;
nsp = nfp_eth_config_start(cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
err = __nfp_eth_set_fec(nsp, mode);
if (err) {
nfp_eth_config_cleanup_end(nsp);
return err;
}
return nfp_eth_config_commit_end(nsp);
}
/**
* __nfp_eth_set_txpause() - set tx pause control bit
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @tx_pause: TX pause switch
*
* Set TX pause switch.
*
* Return: 0 or -ERRNO.
*/
static int __nfp_eth_set_txpause(struct nfp_nsp *nsp, unsigned int tx_pause)
{
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_STATE, NSP_ETH_STATE_TX_PAUSE,
tx_pause, NSP_ETH_CTRL_SET_TX_PAUSE);
}
/**
* __nfp_eth_set_rxpause() - set rx pause control bit
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @rx_pause: RX pause switch
*
* Set RX pause switch.
*
* Return: 0 or -ERRNO.
*/
static int __nfp_eth_set_rxpause(struct nfp_nsp *nsp, unsigned int rx_pause)
{
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_STATE, NSP_ETH_STATE_RX_PAUSE,
rx_pause, NSP_ETH_CTRL_SET_RX_PAUSE);
}
/**
* nfp_eth_set_pauseparam() - Set TX/RX pause switch.
* @cpp: NFP CPP handle
* @idx: NFP chip-wide port index
* @tx_pause: TX pause switch
* @rx_pause: RX pause switch
*
* Return:
* 0 - configuration successful;
* 1 - no changes were needed;
* -ERRNO - configuration failed.
*/
int
nfp_eth_set_pauseparam(struct nfp_cpp *cpp, unsigned int idx,
unsigned int tx_pause, unsigned int rx_pause)
{
struct nfp_nsp *nsp;
int err;
nsp = nfp_eth_config_start(cpp, idx);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
if (nfp_nsp_get_abi_ver_minor(nsp) < 37) {
nfp_err(nfp_nsp_cpp(nsp),
"set pause parameter operation not supported, please update flash\n");
nfp_eth_config_cleanup_end(nsp);
return -EOPNOTSUPP;
}
err = __nfp_eth_set_txpause(nsp, tx_pause);
if (err) {
nfp_eth_config_cleanup_end(nsp);
return err;
}
err = __nfp_eth_set_rxpause(nsp, rx_pause);
if (err) {
nfp_eth_config_cleanup_end(nsp);
return err;
}
return nfp_eth_config_commit_end(nsp);
}
/**
* __nfp_eth_set_speed() - set interface speed/rate
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @speed: Desired speed (per lane)
*
* Set lane speed. Provided @speed value should be subport speed divided
* by number of lanes this subport is spanning (i.e. 10000 for 40G, 25000 for
* 50G, etc.)
* Will write to hwinfo overrides in the flash (persistent config).
*
* Return: 0 or -ERRNO.
*/
int __nfp_eth_set_speed(struct nfp_nsp *nsp, unsigned int speed)
{
enum nfp_eth_rate rate;
rate = nfp_eth_speed2rate(speed);
if (rate == RATE_INVALID) {
nfp_warn(nfp_nsp_cpp(nsp),
"could not find matching lane rate for speed %u\n",
speed);
return -EINVAL;
}
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_STATE,
NSP_ETH_STATE_RATE, rate,
NSP_ETH_CTRL_SET_RATE);
}
/**
* __nfp_eth_set_split() - set interface lane split
* @nsp: NFP NSP handle returned from nfp_eth_config_start()
* @lanes: Desired lanes per port
*
* Set number of lanes in the port.
* Will write to hwinfo overrides in the flash (persistent config).
*
* Return: 0 or -ERRNO.
*/
int __nfp_eth_set_split(struct nfp_nsp *nsp, unsigned int lanes)
{
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_PORT, NSP_ETH_PORT_LANES,
lanes, NSP_ETH_CTRL_SET_LANES);
}
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